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  • Grivel - Mega HMS Twin Gate Carabiner - One Color

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  • Grivel - Mega HMS Twin Gate Carabiner - One Color

Grivel Mega HMS Twin Gate Carabiner


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    • One Color, One Size

    7 Reviews


    From bolts to belays.

    Although it looks like a non-clipper, Grivel's Mega K6G Carabiner has a unique Twin Gate locking device suitable for belays and anchors. Twin Gate prevents the Mega from accidentally unclipping mid-belay, and it adds a surprising strength rating for reliable durability. The Mega has a sleek, streamlined design that works for the bolt-end of quickdraws, and you can easily tie Munter hitches once you get to the anchor.

    • Unique Twin Gate carabiner
    • Item #GRV000J

    Tech Specs

    Gate Type
    twin (straight)
    Major Axis Strength
    27 kN
    Minor Axis Strength
    10 kN
    Open Gate Strength
    10 kN
    Gate Opening
    19 mm
    102 x 71 mm
    Claimed Weight
    2.9 oz
    Recommended Use
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

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    • Familiarity: I've put it through the wringer

    I have four (could use another) that I use for trad and especially for multi-pitch. I've been using them exclusively for at least two seasons. Why do I have them? the primary reason: If you have never been belaying and noticed that your screw gate has come undone during a long session, you probably haven't been climbing very long (go ahead and comment if this has/hasn't happened to you or your partner[s]). I neither wanted to find myself in that unnerving situation again, nor wanted to leave room for error when I'm tired and doing my series of raps at day's end.

    I was a bit nervous at first using this, but I have never been able to open this biner without intentionally doing so. And I've tried a bunch of times in the gym and while hanging on an anchor (with other security). I consider it a locker.

    It's fast and easy using these--€”faster than a screw gate (nothing to screw). I use them on my DMM guide device, for anchor set up (I keep two attached to a quad), and for my personal tether. While I did have to watch the videos with the beast Stevie Haston (he has a blog) to learn how to use them efficiently (the pro tip: only open one gate and simply push whatever you want through it), a 10 second learning curve isn't a pain. I showed my trad partners how to use them and that's that. (I have one friend who is constantly annoyed by them because he thinks they are a redundant pain in the butt. Whatever. He can deal.)

    Another stat. The gate clearance is great. I have had four different strands of line (rope, LOL) lying in it and can open the gate without the gate touching any of them. So the design on this is fantastic and you can dump all four strands by just tiling the biner while opening the gate with the fingers of your same hand. Super easy, one handed operation. I have small hands but can still manipulate it easily. I haven't had snagging with this thing.

    The only downsides to this thing are, first, that it is a bit heavy. But honestly, it weighs less than the Petzl William screw gate, and it is just as functional (I've never wished this biner was bigger). And that's my only real grip. But It is crazy strong (so others can lash onto it) and, importantly, it's rounded. That means using this baby with ropes makes the system smooth. Second, though it does fit through my GriGri 2, the tolerance is tight and does take three seconds to jiggle/twist the biner out of the device. But the GriGri doesn't get a lot of trad use, so I don't really care.

    For size comparisons, I've included a picture of some common BD biners on the top and the DMMs I use. You can see that the biner is a nice hand size, but by no means too big. (From left to right. BDs: rocklock, mini pearabiner, nitron, gridlock. DMMs: spectre 2 [fantastic workhorse], alpha light, and chimera [fantastic racking biner]).


    Awesome autolocking biner

    • Familiarity: I've put it through the wringer

    I love this design. This is by far my favorite auto-locker and potentially even my favorite locker overall. It takes a little getting used to, but once you have used it a number of times you become incredibly fast with it. Faster than any other locking biner in my opinion.

    I always use this as my locking biner for belaying/rappelling, so long as I have it available to me.

    For an auto-locker, I think the price is fantastic. Cheaper than most all of the competition.

    As much as I love this biner, I wish it was a little on the lighter side. I know auto-lockers tend to be heavier, but when comparing it to other HMS locking biners, I find it falls towards the middle of the pack in terms of weight. Biners like the Petzl Attache make for a very nice HMS locking biner that is also light.

    Cool biner, but not versatile

    • Familiarity: I've put it through the wringer

    I got this 'biner more as an experiment than anything else. I like it a lot, but its limited versatility and the confusion it inspires in my partners means that it doesn't get off the ground much.

    I'd say it's worth getting for a specific purpose---like a belay/rappel biner---but that if this is one of your first lockers, get more versatile "normal" lockers.

    - It's lighter than most other HMS lockers
    - Bomber, elegant twingate mechanism is pretty much impossible to accidentally open
    - Nice rounded stock shape is great for rappeling and belaying
    - Super duper strong 'biner!
    - With a little practice, clipping/unclipping from ropes/other round cord is a cinch and one of the easiest/fastest locking mechanisms out there

    - Even with practice, clipping/unclipping from webbing is annoying (webbing doesn't press the other gate open very far and tends to snag)
    - Sometimes awkward to use because it takes a little more of a controlled motion to clip/unclip--e.g. if it's already clipped to something (like the anchor) and you want to clip another thing to it (like the pack)

    Awesome 'biner

    • Familiarity: I've put it through the wringer

    These carabiners are great. I wasn't super sure about them when I first saw the videos but I figured I'd give it a go and I'm so glad I did. These are stronger and so much faster than your average screwlock or even a twistlock.

    Favorite Locking Carabiner By Far

      I gave this carabiner as a gift and here is the review:

      "I can't say enough good things about this carabiner. For starters, the color of the carabiner is AWESOME. The only curious thing about the carabiner can be seen in the picture below. I ordered two of the exact same carabiner and one was a matte finish on the color, whereas the other one had a glossier finish. Not sure why that happened and it doesn't seem like I had any control over what the finish was. The twin gates are so cool and I feel like the provide more safety than a screwgate or slidelock.

      Favorite Locking Carabiner By Far

      The Twin Gate Biner in Action!

      Stevie Haston - the man himself - showing how quick, simple, safe and effective the double gate biner can be!

      Here's a link that describes the biner even more!

      Pass through the eye of the beholder!

      • Familiarity: I've put it through the wringer

      This thing is sweeeeeet!

      It can pass through the eye hole on a guide mode belay device, or through most chain links at anchors/belays.

      It takes a little getting used to opening it with one hand but when it all comes together these things are pretty nice to have. No twisting or turning to lock and open -



      My New Favorite Locker

      • Familiarity: I've used it several times

      When I saw this carabiner, I knew I had to try it myself. At first it appears to be difficult to maneuver with just one hand, but with a little practice it is actually quite simple through some real forward thinking design. This will definitely help avoid issues that people have had in the past with sticky or frozen screw gates on lockers while providing a similar "auto-lock" design that many other carabiners have without running into the same closing issues that others have. All of that plus the hulk like strength of the carabiner overall (27kN major axis strength) makes this my new favorite anchor/belay piece. This piece is definitely worth the price and should be included on any climber's gear rack!